The images in the film of horse-drawn carriages and cars make it clear that, in Dragonwings, Laurence Yep created:
a truthful setting.
Explanation:
Laurence Yep tried to create the setting of the story relatable with the film. She added the realistic detail in the setting of the story. The streets in the story were shared by the horse-drawn carriages and cars which showcases the realistic detail in the story.
To establish credibility, you can quote people who are experienced/educated in the subject. You can also include statistics for the subject matter and cite studies.